Probably not. The program will automatically download and install components as needed, so you'll at least need an internet connection when you edit a new video format.
What model of camcorder is your video coming from and what format and resolution is it?
Hi Thanks and in reply to Steve's comment canon sx50 and nikon d5300 both photos and video clips higest quality formats and resolutions dependinig on time of day, weather, speed of activity, depth of focus and distance from subject. Editing onsite which will have no internet service. Have you seen "Walter Mity's private life" ? Very similar and seems not an adobe job.
Yes, you will need to download and install the necessary components for working with DSLR and AVCHD video.